| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright 2018 Intel Corp. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <arch/acpi.h> |
| #include <baseboard/variants.h> |
| #include <boardid.h> |
| #include <console/console.h> |
| #include <device/device.h> |
| #include <device/pci_def.h> |
| #include <device/pci_ops.h> |
| #include <ec/google/chromeec/ec.h> |
| #include <ec/ec.h> |
| #include <nhlt.h> |
| #include <smbios.h> |
| #include <soc/cpu.h> |
| #include <soc/gpio.h> |
| #include <soc/nhlt.h> |
| #include <soc/pci_devs.h> |
| #include <stdint.h> |
| #include <string.h> |
| #include <vendorcode/google/chromeos/chromeos.h> |
| #include <variant/ec.h> |
| #include <variant/gpio.h> |
| |
| static bool is_cnvi_held_in_reset(void) |
| { |
| struct device *dev = dev_find_slot(0, PCH_DEVFN_CNVI); |
| uint32_t reg = pci_read_config32(dev, PCI_VENDOR_ID); |
| |
| /* |
| * If vendor/device ID for CNVi reads as 0xffffffff, then it is safe to |
| * assume that it is being held in reset. |
| */ |
| if (reg == 0xffffffff) |
| return true; |
| |
| return false; |
| } |
| |
| static void disable_wifi_wake(void) |
| { |
| static const struct pad_config wifi_wake_gpio[] = { |
| PAD_NC(GPIO_119, UP_20K), |
| }; |
| |
| gpio_configure_pads(wifi_wake_gpio, ARRAY_SIZE(wifi_wake_gpio)); |
| } |
| |
| static void mainboard_init(void *chip_info) |
| { |
| int boardid; |
| const struct pad_config *base_pads; |
| const struct pad_config *override_pads; |
| size_t base_num, override_num; |
| |
| boardid = board_id(); |
| printk(BIOS_INFO, "Board ID: %d\n", boardid); |
| |
| base_pads = variant_base_gpio_table(&base_num); |
| override_pads = variant_override_gpio_table(&override_num); |
| |
| gpio_configure_pads_with_override(base_pads, base_num, |
| override_pads, override_num); |
| |
| if (!is_cnvi_held_in_reset()) |
| disable_wifi_wake(); |
| |
| mainboard_ec_init(); |
| } |
| |
| static unsigned long mainboard_write_acpi_tables( |
| struct device *device, unsigned long current, acpi_rsdp_t *rsdp) |
| { |
| uintptr_t start_addr; |
| uintptr_t end_addr; |
| struct nhlt *nhlt; |
| |
| start_addr = current; |
| |
| nhlt = nhlt_init(); |
| |
| if (nhlt == NULL) |
| return start_addr; |
| |
| variant_nhlt_init(nhlt); |
| |
| end_addr = nhlt_soc_serialize(nhlt, start_addr); |
| |
| if (end_addr != start_addr) |
| acpi_add_table(rsdp, (void *)start_addr); |
| |
| return end_addr; |
| } |
| |
| static void mainboard_enable(struct device *dev) |
| { |
| dev->ops->write_acpi_tables = mainboard_write_acpi_tables; |
| dev->ops->acpi_inject_dsdt_generator = chromeos_dsdt_generator; |
| } |
| |
| struct chip_operations mainboard_ops = { |
| .init = mainboard_init, |
| .enable_dev = mainboard_enable, |
| }; |
| |
| #define SKU_UNKNOWN 0xFFFFFFFF |
| #define SKU_MAX 255 |
| |
| static uint32_t get_board_sku(void) |
| { |
| static uint32_t sku_id = SKU_UNKNOWN; |
| |
| if (sku_id != SKU_UNKNOWN) |
| return sku_id; |
| |
| if (google_chromeec_cbi_get_sku_id(&sku_id)) |
| sku_id = SKU_UNKNOWN; |
| |
| return sku_id; |
| } |
| |
| const char *smbios_mainboard_sku(void) |
| { |
| static char sku_str[7]; /* sku{0..255} */ |
| uint32_t sku_id = get_board_sku(); |
| |
| if ((sku_id == SKU_UNKNOWN) || (sku_id > SKU_MAX)) { |
| printk(BIOS_ERR, "%s: Unexpected SKU ID %u\n", |
| __func__, sku_id); |
| return ""; |
| } |
| |
| snprintf(sku_str, sizeof(sku_str), "sku%u", sku_id); |
| |
| return sku_str; |
| } |
| |
| void __weak variant_update_devtree(struct device *dev) |
| { |
| /* Place holder for common updates. */ |
| } |
| |
| /* |
| * Check if CNVi PCI device is released from reset. If yes, then the system is |
| * booting with CNVi module. In this case, the PCIe device for WiFi needs to |
| * be disabled. If CNVi device is held in reset, then disable it. |
| */ |
| static void wifi_device_update(void) |
| { |
| struct device *dev; |
| unsigned int devfn; |
| |
| if (is_cnvi_held_in_reset()) |
| devfn = PCH_DEVFN_CNVI; |
| else |
| devfn = PCH_DEVFN_PCIE1; |
| |
| dev = dev_find_slot(0, devfn); |
| if (dev) |
| dev->enabled = 0; |
| } |
| |
| void mainboard_devtree_update(struct device *dev) |
| { |
| /* Apply common devtree updates. */ |
| wifi_device_update(); |
| |
| /* Defer to variant for board-specific updates. */ |
| variant_update_devtree(dev); |
| } |